def test_perspective_camera_near_far():
for near, far in [
(0.1, 100),
(0.1, 10000),
(10, 1200),
(200, 300),
(490, 500),
]:
camera = gfx.PerspectiveCamera(50, 1, near, far)
camera.update_projection_matrix()
assert camera.near == near
assert camera.far == far
_run_for_camera(camera, near, far, False)
canvas = WgpuCanvas()
renderer = gfx.renderers.WgpuRenderer(canvas)
scene = gfx.Scene()
geometry = gfx.torus_knot_geometry(1, 0.3, 128, 16)
material1 = gfx.MeshPhongMaterial(color=(0.5, 0.5, 0.5, 1.0))
material2 = gfx.MeshSliceMaterial(thickness=8,
color=(1, 1, 0, 1),
plane=(0, 0, 1, 0))
obj1 = gfx.Mesh(geometry, material1)
obj2 = gfx.Mesh(geometry, material2)
scene.add(obj1)
scene.add(obj2)
camera = gfx.PerspectiveCamera(70, 2)
camera.position.z = 4
def animate():
dist = material2.plane[3]
dist += 0.02
if dist > 1:
dist = -1.5
material2.plane = 1, 0, 1, dist
renderer.render(scene, camera)
canvas.request_draw()
im = imageio.imread("imageio:chelsea.png")
tex = gfx.Texture(im, dim=2).get_view(filter="linear")
material = gfx.MeshBasicMaterial(map=tex)
geometry = gfx.box_geometry(100, 100, 100)
cubes = [gfx.Mesh(geometry, material) for i in range(8)]
for i, cube in enumerate(cubes):
cube.position.set(350 - i * 100, 0, 0)
scene.add(cube)
background = gfx.Background(None,
gfx.BackgroundMaterial((0, 1, 0, 1), (0, 1, 1, 1)))
scene.add(background)
camera = gfx.PerspectiveCamera(70, 16 / 9)
camera.position.z = 500
def animate():
for i, cube in enumerate(cubes):
rot = gfx.linalg.Quaternion().set_from_euler(
gfx.linalg.Euler(0.01 * i, 0.02 * i))
cube.rotation.multiply(rot)
renderer.render(scene, camera)
canvas.request_draw()
if __name__ == "__main__":
canvas.request_draw(animate)
texture1 = gfx.Texture(dim=2, size=(200, 200, 1), format="rgba8unorm")
renderer1 = gfx.renderers.WgpuRenderer(texture1)
scene1 = gfx.Scene()
background1 = gfx.Background(None, gfx.BackgroundMaterial((0, 0.5, 0, 1)))
scene1.add(background1)
im = imageio.imread("imageio:bricks.jpg").astype(np.float32) / 255
tex = gfx.Texture(im, dim=2).get_view(filter="linear", address_mode="repeat")
geometry1 = gfx.box_geometry(200, 200, 200)
material1 = gfx.MeshPhongMaterial(map=tex, color=(1, 1, 0, 1.0))
cube1 = gfx.Mesh(geometry1, material1)
scene1.add(cube1)
camera1 = gfx.PerspectiveCamera(70, 16 / 9)
camera1.position.z = 300
# Then create the actual scene, in the visible canvas
canvas2 = WgpuCanvas()
renderer2 = gfx.renderers.WgpuRenderer(canvas2)
scene2 = gfx.Scene()
geometry2 = gfx.box_geometry(200, 200, 200)
material2 = gfx.MeshPhongMaterial(map=texture1.get_view(filter="linear"))
cube2 = gfx.Mesh(geometry2, material2)
scene2.add(cube2)
scene = gfx.Scene()
# %% Select near, far, and camera
# With the ortho camera, you can pick any values you like, also negative
# near values. With the perspective camera you'll want to pick a small
# positive near-value, and a relatively small value for the far-value
# as well, otherwise the distant squares become smaller than 1 pixel ;)
# Select camera and matchingclipping planes
if True:
near, far = -40, 300
camera = gfx.OrthographicCamera(2.2, 2.2, near, far)
else:
near, far = 5, 10
camera = gfx.PerspectiveCamera(50, 1, near, far)
# %% Create four planes near the z-clipping planes
geometry = gfx.plane_geometry(1, 1)
green_material = gfx.MeshBasicMaterial(color=(0, 0.8, 0.2, 1))
greener_material = gfx.MeshBasicMaterial(color=(0, 1, 0, 1))
red_material = gfx.MeshBasicMaterial(color=(1, 0, 0, 1))
plane1 = gfx.Mesh(geometry, green_material)
plane2 = gfx.Mesh(geometry, red_material)
plane3 = gfx.Mesh(geometry, greener_material)
plane4 = gfx.Mesh(geometry, red_material)
# Note the negation of near and far in the plane's position. This is
# because the camera looks down the z-axis: more negative means moving
